# -*- coding: utf-8 -*-
# File : random_util.py
# Author: taoyahui
# Date : 2021/6/18
import random
import string


def random_string():
    gen_str = ''.join(random.sample(string.ascii_letters + string.digits, 16))
    return gen_str


if __name__ == '__main__':
    print(random_string())